Built 2026-10-18 (18 October 2026)

Truro Weather Records (CA008205988)

Record envelope, standing records and threshold days for Truro (CA008205988), Nova Scotia, Canada, with 44 years of record.

Key Facts for Truro

  • Truro (CA008205988) is a weather station in Nova Scotia, Canada at 45.35 latitude and -63.30 longitude, 12 m (39 ft) above sea level.
  • The station reports from 1872 to 1915, 44 years of record.
  • 1,464 records set at Truro still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Truro set a daily record precipitation of 41.9 mm (1.6 in) on 29 August 1915.

About the Station

  • Location: Nova Scotia, Canada, 45.35 latitude, -63.30 longitude.
  • Elevation: 12 m (39 ft).
  • Period of record: 1872 to 1915, 44 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Truro, with 2026 drawn through them The band shows the record high and record low for each calendar day at Truro. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Truro. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Truro, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.1 C (61.0 F)-35.0 C (-31.0 F)n/an/a
Feb12.8 C (55.0 F)-33.9 C (-29.0 F)n/an/a
Mar17.2 C (63.0 F)-31.1 C (-24.0 F)n/an/a
Apr23.9 C (75.0 F)-15.6 C (3.9 F)n/an/a
May30.6 C (87.1 F)-7.2 C (19.0 F)n/an/a
Jun30.6 C (87.1 F)-4.4 C (24.1 F)n/an/a
Jul33.9 C (93.0 F)0.0 C (32.0 F)n/an/a
Aug32.8 C (91.0 F)0.0 C (32.0 F)n/an/a
Sep31.7 C (89.1 F)-7.2 C (19.0 F)n/an/a
Oct25.6 C (78.1 F)-8.9 C (16.0 F)n/an/a
Nov20.0 C (68.0 F)-20.6 C (-5.1 F)n/an/a
Dec15.6 C (60.1 F)-35.0 C (-31.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Truro by the year they were set 1,464 records at Truro still stand. 1914 holds the most, with 50. 02040601873: 451874: 401875: 471876: 281877: 271878: 301879: 471880: 471881: 341882: 291883: 351884: 401885: 401886: 391887: 361888: 311889: 491890: 361891: 361892: 361893: 251894: 221895: 321896: 271897: 371898: 281899: 241900: 291901: 301902: 381903: 311904: 451905: 81906: 361907: 281908: 211909: 281910: 451911: 311912: 351913: 431914: 501915: 19187318781883188818931898190319081913
1,464 records at Truro still stand. 1914 holds the most, with 50.
Standing records at Truro by the year they were set
Year setStanding records
187345
187440
187547
187628
187727
187830
187947
188047
188134
188229
188335
188440
188540
188639
188736
188831
188949
189036
189136
189236
189325
189422
189532
189627
189737
189828
189924
190029
190130
190238
190331
190445
19058
190636
190728
190821
190928
191045
191131
191235
191343
191450
191519

All-Time Record Progression

2 new records
When Truro set new all-time records 2 all-time records were set at Truro between 27 July 1904 and 12 February 1914. Each dot is a new record. Record high maximum temperatureRecord low maximum temperature27 July 1904: Record high maximum temperature 33.9 C (93.0 F)12 February 1914: Record low maximum temperature -21.7 C (-7.1 F)190519101915
2 all-time records were set at Truro between 27 July 1904 and 12 February 1914. Each dot is a new record.
When Truro set new all-time records
DateKindDetail
1904-07-27Record high maximum temperatureRecord high maximum temperature 33.9 C (93.0 F)
1914-02-12Record low maximum temperatureRecord low maximum temperature -21.7 C (-7.1 F)

Wettest Day of Each Month

Oct: 88.4 mm (3.5 in)
Record daily precipitation for each month at Truro The wettest day on record for each calendar month at Truro. The most was 88.4 mm (3.5 in) on 19 October 1896. 0255075100 Jan: 51.1 mm (2.0 in), 15 January 1881 Jan Feb: 61.0 mm (2.4 in), 1 February 1889 Feb Mar: 80.8 mm (3.2 in), 18 March 1879 Mar Apr: 43.2 mm (1.7 in), 10 April 1872 Apr May: 72.6 mm (2.9 in), 9 May 1886 May Jun: 75.7 mm (3.0 in), 20 June 1889 Jun Jul: 49.5 mm (1.9 in), 13 July 1884 Jul Aug: 85.6 mm (3.4 in), 2 August 1908 Aug Sep: 66.8 mm (2.6 in), 4 September 1904 Sep Oct: 88.4 mm (3.5 in), 19 October 1896 Oct Nov: 88.1 mm (3.5 in), 20 November 1892 Nov Dec: 58.9 mm (2.3 in), 12 December 1887 Dec
The wettest day on record for each calendar month at Truro. The most was 88.4 mm (3.5 in) on 19 October 1896.
Record daily precipitation for each month at Truro
MonthRecord daily precipitation (mm)Date
Jan51.1 mm (2.0 in)15 January 1881
Feb61.0 mm (2.4 in)1 February 1889
Mar80.8 mm (3.2 in)18 March 1879
Apr43.2 mm (1.7 in)10 April 1872
May72.6 mm (2.9 in)9 May 1886
Jun75.7 mm (3.0 in)20 June 1889
Jul49.5 mm (1.9 in)13 July 1884
Aug85.6 mm (3.4 in)2 August 1908
Sep66.8 mm (2.6 in)4 September 1904
Oct88.4 mm (3.5 in)19 October 1896
Nov88.1 mm (3.5 in)20 November 1892
Dec58.9 mm (2.3 in)12 December 1887

Period of Record Coverage

1873 to 1915
Days with data per year at Truro 43 years of record at Truro, 1873 to 1915. 6 years have data for under 90 percent of days and are left out of rankings: 1874, 1876, 1883, 1905, 1911, 1915. 1873: 356 of 365 days1874: 325 of 365 days1875: 364 of 365 days1876: 305 of 366 days1877: 334 of 365 days1878: 358 of 365 days1879: 364 of 365 days1880: 366 of 366 days1881: 362 of 365 days1882: 363 of 365 days1883: 326 of 365 days1884: 359 of 366 days1885: 354 of 365 days1886: 363 of 365 days1887: 357 of 365 days1888: 362 of 366 days1889: 363 of 365 days1890: 355 of 365 days1891: 365 of 365 days1892: 362 of 366 days1893: 365 of 365 days1894: 351 of 365 days1895: 365 of 365 days1896: 362 of 366 days1897: 363 of 365 days1898: 362 of 365 days1899: 357 of 365 days1900: 365 of 365 days1901: 365 of 365 days1902: 365 of 365 days1903: 365 of 365 days1904: 365 of 366 days1905: 121 of 365 days1906: 364 of 365 days1907: 364 of 365 days1908: 364 of 366 days1909: 364 of 365 days1910: 361 of 365 days1911: 294 of 365 days1912: 351 of 366 days1913: 365 of 365 days1914: 365 of 365 days1915: 237 of 365 days1880189019001910
43 years of record at Truro, 1873 to 1915. 6 years have data for under 90 percent of days and are left out of rankings: 1874, 1876, 1883, 1905, 1911, 1915.
Days with data per year at Truro
YearDays with dataShare of yearComplete
187335698%Yes
187432589%No
1875364100%Yes
187630583%No
187733492%Yes
187835898%Yes
1879364100%Yes
1880366100%Yes
188136299%Yes
188236399%Yes
188332689%No
188435998%Yes
188535497%Yes
188636399%Yes
188735798%Yes
188836299%Yes
188936399%Yes
189035597%Yes
1891365100%Yes
189236299%Yes
1893365100%Yes
189435196%Yes
1895365100%Yes
189636299%Yes
189736399%Yes
189836299%Yes
189935798%Yes
1900365100%Yes
1901365100%Yes
1902365100%Yes
1903365100%Yes
1904365100%Yes
190512133%No
1906364100%Yes
1907364100%Yes
190836499%Yes
1909364100%Yes
191036199%Yes
191129481%No
191235196%Yes
1913365100%Yes
1914365100%Yes
191523765%No

Latest Records

20
Latest records at Truro
DateStationRecordValueBeat old record byOld record stoodSignificance
29 August 1915Truro, CAdaily rain41.9 mm (1.6 in)7.6 mm (0.30 in)42 years22 of 100 (Routine)
18 August 1915Truro, CAdaily low max15.0 C (59.0 F)2.2 C (4.0 F)28 years18 of 100 (Routine)
3 August 1915Truro, CAdaily rain59.7 mm (2.4 in)25.7 mm (1.0 in)39 years38 of 100 (Notable)
21 July 1915Truro, CAdaily low max17.8 C (64.0 F)1.6 C (2.9 F)12 years11 of 100 (Routine)
22 June 1915Truro, CAdaily low max10.6 C (51.1 F)2.2 C (4.0 F)33 years19 of 100 (Routine)
22 June 1915Truro, CAdaily rain19.3 mm (0.8 in)2.3 mm (0.09 in)33 years16 of 100 (Routine)
9 June 1915Truro, CAdaily high min15.0 C (59.0 F)1.7 C (3.1 F)37 years19 of 100 (Routine)
8 June 1915Truro, CAdaily high min15.0 C (59.0 F)1.1 C (2.0 F)37 years17 of 100 (Routine)
7 June 1915Truro, CAdaily high min14.4 C (57.9 F)1.6 C (2.9 F)37 years18 of 100 (Routine)
5 June 1915Truro, CAdaily high max26.1 C (79.0 F)1.7 C (3.1 F)36 years19 of 100 (Routine)
3 June 1915Truro, CAdaily low min-1.7 C (28.9 F)0.6 C (1.1 F)33 years15 of 100 (Routine)
28 May 1915Truro, CAdaily low max (Tie)10.6 C (51.1 F)tie21 years2 of 100 (Routine)
27 May 1915Truro, CAdaily rain32.3 mm (1.3 in)2.3 mm (0.09 in)6 years8 of 100 (Routine)
5 May 1915Truro, CAdaily low max5.0 C (41.0 F)0.6 C (1.1 F)4 years6 of 100 (Routine)
3 May 1915Truro, CAdaily rain28.2 mm (1.1 in)8.4 mm (0.33 in)8 years15 of 100 (Routine)
26 April 1915Truro, CAdaily low max (Tie)2.2 C (36.0 F)tie5 years1 of 100 (Routine)
17 April 1915Truro, CAdaily high min5.0 C (41.0 F)2.2 C (4.0 F)16 years14 of 100 (Routine)
16 April 1915Truro, CAdaily high max (Tie)18.3 C (64.9 F)tie2 years1 of 100 (Routine)
12 April 1915Truro, CAdaily high min8.9 C (48.0 F)6.1 C (11.0 F)1 year18 of 100 (Routine)
11 April 1915Truro, CAdaily high min6.1 C (43.0 F)1.7 C (3.1 F)10 years10 of 100 (Routine)

Climate Trend

35 complete years, 1873 to 1914
Annual mean temperature at Truro as warming stripes, 1873 to 1914 One stripe for each of 35 complete years at Truro, 1873 to 1914. Blue stripes are years cooler than the station's own mean of 5.6 C (42.1 F); red stripes are warmer. The coolest year was 1875, at 3.6 C (38.5 F), and the warmest was 1889, at 7.1 C (44.8 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1873: 4.7 C, -0.9 C from the station mean1875: 3.6 C, -2.0 C from the station mean1878: 6.6 C, +1.0 C from the station mean1879: 4.6 C, -1.0 C from the station mean1880: 5.3 C, -0.3 C from the station mean1881: 5.3 C, -0.3 C from the station mean1882: 4.9 C, -0.8 C from the station mean1884: 5.1 C, -0.5 C from the station mean1885: 5.5 C, -0.1 C from the station mean1886: 6.2 C, +0.5 C from the station mean1887: 5.3 C, -0.3 C from the station mean1888: 5.0 C, -0.6 C from the station mean1889: 7.1 C, +1.5 C from the station mean1890: 5.5 C, -0.1 C from the station mean1891: 6.5 C, +0.9 C from the station mean1892: 6.1 C, +0.5 C from the station mean1893: 5.4 C, -0.2 C from the station mean1894: 5.6 C, 0.0 C from the station mean1895: 6.2 C, +0.6 C from the station mean1896: 5.5 C, -0.1 C from the station mean1897: 5.6 C, 0.0 C from the station mean1898: 6.3 C, +0.7 C from the station mean1899: 5.4 C, -0.2 C from the station mean1900: 6.1 C, +0.4 C from the station mean1901: 6.7 C, +1.1 C from the station mean1902: 6.3 C, +0.7 C from the station mean1903: 5.5 C, -0.2 C from the station mean1904: 4.4 C, -1.2 C from the station mean1906: 6.0 C, +0.4 C from the station mean1907: 5.0 C, -0.6 C from the station mean1908: 5.7 C, +0.1 C from the station mean1909: 6.3 C, +0.7 C from the station mean1910: 6.5 C, +0.9 C from the station mean1913: 6.4 C, +0.8 C from the station mean1914: 4.6 C, -1.1 C from the station mean18731880188518901895190019051910
One stripe for each of 35 complete years at Truro, 1873 to 1914. Blue stripes are years cooler than the station's own mean of 5.6 C (42.1 F); red stripes are warmer. The coolest year was 1875, at 3.6 C (38.5 F), and the warmest was 1889, at 7.1 C (44.8 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Truro as warming stripes, 1873 to 1914
YearAnnual mean temperatureDifference from the station mean
18734.7 C-0.90 C
18753.6 C-2.01 C
18786.6 C+0.97 C
18794.6 C-0.99 C
18805.3 C-0.32 C
18815.3 C-0.32 C
18824.9 C-0.77 C
18845.1 C-0.53 C
18855.5 C-0.11 C
18866.2 C+0.55 C
18875.3 C-0.33 C
18885.0 C-0.63 C
18897.1 C+1.51 C
18905.5 C-0.09 C
18916.5 C+0.86 C
18926.1 C+0.46 C
18935.4 C-0.22 C
18945.6 C-0.03 C
18956.2 C+0.57 C
18965.5 C-0.13 C
18975.6 C-0.02 C
18986.3 C+0.72 C
18995.4 C-0.18 C
19006.1 C+0.44 C
19016.7 C+1.12 C
19026.3 C+0.70 C
19035.5 C-0.15 C
19044.4 C-1.23 C
19066.0 C+0.36 C
19075.0 C-0.64 C
19085.7 C+0.09 C
19096.3 C+0.71 C
19106.5 C+0.88 C
19136.4 C+0.82 C
19144.6 C-1.06 C

The fitted trend in annual mean temperature here over 1873 to 1914 is 0.22 C (-0.01 to 0.44) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.39 F (-0.02 to 0.80) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Truro
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.22 C (-0.01 to 0.44) per decade0.39 F (-0.02 to 0.80) per decade1873 to 191435Not clearly different from zero
Mean daily maximum0.3 C (0.1 to 0.5) per decade0.6 F (0.1 to 1.0) per decade1873 to 191435Rise
Mean daily minimum0.1 C (-0.1 to 0.4) per decade0.2 F (-0.2 to 0.7) per decade1873 to 191435Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1872 to 1915
Yearly extremes at Truro: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)33.9 C (93.0 F)190431.1 C (88.0 F)43
Coldest night (TNn)-35.0 C (-31.0 F)1875-28.9 C (-20.0 F)43
Wettest day (Rx1day)88.4 mm (3.5 in)189657.1 mm (2.2 in)44
Wettest five days (Rx5day)121.9 mm (4.8 in)189283.8 mm (3.3 in)44
Longest dry spell (CDD)25 days188913 days44

Hottest day (TXx)

Hottest day (TXx) at Truro by year The hottest day of the year at Truro, 1872 to 1915. The record is 33.9 C (93.0 F) in 1904, marked on the chart; the median year is 31.1 C (88.0 F). 2527.53032.5351880189019001910Record: 33.9 C (93.0 F) in 1904
The hottest day of the year at Truro, 1872 to 1915. The record is 33.9 C (93.0 F) in 1904, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Truro by year
YearHottest day (TXx)
1872n/a
187331.7 C (89.1 F)
187426.7 C (80.1 F)
187527.2 C (81.0 F)
187631.1 C (88.0 F)
187729.4 C (84.9 F)
187830.6 C (87.1 F)
187928.9 C (84.0 F)
188032.8 C (91.0 F)
188130.6 C (87.1 F)
188230.6 C (87.1 F)
188328.9 C (84.0 F)
188432.2 C (90.0 F)
188530.0 C (86.0 F)
188629.4 C (84.9 F)
188732.2 C (90.0 F)
188827.8 C (82.0 F)
188930.6 C (87.1 F)
189029.4 C (84.9 F)
189132.2 C (90.0 F)
189231.1 C (88.0 F)
189332.2 C (90.0 F)
189431.1 C (88.0 F)
189531.1 C (88.0 F)
189630.6 C (87.1 F)
189731.1 C (88.0 F)
189832.8 C (91.0 F)
189930.0 C (86.0 F)
190030.6 C (87.1 F)
190131.1 C (88.0 F)
190232.2 C (90.0 F)
190327.8 C (82.0 F)
190433.9 C (93.0 F)
190525.6 C (78.1 F)
190632.8 C (91.0 F)
190731.1 C (88.0 F)
190833.3 C (91.9 F)
190932.2 C (90.0 F)
191031.7 C (89.1 F)
191132.8 C (91.0 F)
191231.7 C (89.1 F)
191330.6 C (87.1 F)
191431.7 C (89.1 F)
191528.3 C (82.9 F)

Coldest night (TNn)

Coldest night (TNn) at Truro by year The coldest night of the year at Truro, 1872 to 1915. The record is -35.0 C (-31.0 F) in 1875, marked on the chart; the median year is -28.9 C (-20.0 F). -35-30-25-20-151880189019001910Record: -35.0 C (-31.0 F) in 1875
The coldest night of the year at Truro, 1872 to 1915. The record is -35.0 C (-31.0 F) in 1875, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Truro by year
YearColdest night (TNn)
1872n/a
1873-31.7 C (-25.1 F)
1874-29.4 C (-20.9 F)
1875-35.0 C (-31.0 F)
1876-26.1 C (-15.0 F)
1877-30.0 C (-22.0 F)
1878-27.8 C (-18.0 F)
1879-35.0 C (-31.0 F)
1880-27.2 C (-17.0 F)
1881-26.7 C (-16.1 F)
1882-27.2 C (-17.0 F)
1883-32.8 C (-27.0 F)
1884-28.9 C (-20.0 F)
1885-31.1 C (-24.0 F)
1886-25.6 C (-14.1 F)
1887-32.8 C (-27.0 F)
1888-27.8 C (-18.0 F)
1889-30.0 C (-22.0 F)
1890-31.1 C (-24.0 F)
1891-25.6 C (-14.1 F)
1892-27.8 C (-18.0 F)
1893-29.4 C (-20.9 F)
1894-28.9 C (-20.0 F)
1895-26.7 C (-16.1 F)
1896-32.2 C (-26.0 F)
1897-28.3 C (-18.9 F)
1898-35.0 C (-31.0 F)
1899-26.1 C (-15.0 F)
1900-28.3 C (-18.9 F)
1901-25.6 C (-14.1 F)
1902-29.4 C (-20.9 F)
1903-28.9 C (-20.0 F)
1904-32.2 C (-26.0 F)
1905-17.2 C (1.0 F)
1906-26.1 C (-15.0 F)
1907-30.0 C (-22.0 F)
1908-27.2 C (-17.0 F)
1909-30.6 C (-23.1 F)
1910-28.3 C (-18.9 F)
1911-27.8 C (-18.0 F)
1912-33.3 C (-27.9 F)
1913-33.3 C (-27.9 F)
1914-34.4 C (-29.9 F)
1915-25.6 C (-14.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Truro by year The wettest day of the year at Truro, 1872 to 1915. The record is 88.4 mm (3.5 in) in 1896, marked on the chart; the median year is 57.1 mm (2.2 in). 204060801001880189019001910Record: 88.4 mm (3.5 in) in 1896
The wettest day of the year at Truro, 1872 to 1915. The record is 88.4 mm (3.5 in) in 1896, marked on the chart; the median year is 57.1 mm (2.2 in).
Wettest day (Rx1day) at Truro by year
YearWettest day (Rx1day)
187253.3 mm (2.1 in)
187361.0 mm (2.4 in)
187458.4 mm (2.3 in)
187541.1 mm (1.6 in)
187652.3 mm (2.1 in)
187761.5 mm (2.4 in)
187874.4 mm (2.9 in)
187980.8 mm (3.2 in)
188030.2 mm (1.2 in)
188151.1 mm (2.0 in)
188257.9 mm (2.3 in)
188365.0 mm (2.6 in)
188449.5 mm (1.9 in)
188556.4 mm (2.2 in)
188672.6 mm (2.9 in)
188758.9 mm (2.3 in)
188850.3 mm (2.0 in)
188975.7 mm (3.0 in)
189039.1 mm (1.5 in)
189149.3 mm (1.9 in)
189288.1 mm (3.5 in)
189336.3 mm (1.4 in)
189440.6 mm (1.6 in)
189561.2 mm (2.4 in)
189688.4 mm (3.5 in)
189754.4 mm (2.1 in)
189882.8 mm (3.3 in)
189985.1 mm (3.4 in)
190048.0 mm (1.9 in)
190159.2 mm (2.3 in)
190229.0 mm (1.1 in)
190348.5 mm (1.9 in)
190466.8 mm (2.6 in)
190575.9 mm (3.0 in)
190647.8 mm (1.9 in)
190746.0 mm (1.8 in)
190885.6 mm (3.4 in)
190957.7 mm (2.3 in)
191058.2 mm (2.3 in)
191135.1 mm (1.4 in)
191245.5 mm (1.8 in)
191350.8 mm (2.0 in)
191445.2 mm (1.8 in)
191559.7 mm (2.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Truro by year The wettest five days of the year at Truro, 1872 to 1915. The record is 121.9 mm (4.8 in) in 1892, marked on the chart; the median year is 83.8 mm (3.3 in). 4060801001201401880189019001910Record: 121.9 mm (4.8 in) in 1892
The wettest five days of the year at Truro, 1872 to 1915. The record is 121.9 mm (4.8 in) in 1892, marked on the chart; the median year is 83.8 mm (3.3 in).
Wettest five days (Rx5day) at Truro by year
YearWettest five days (Rx5day)
187281.8 mm (3.2 in)
187394.0 mm (3.7 in)
187474.9 mm (2.9 in)
187571.1 mm (2.8 in)
187677.5 mm (3.1 in)
187783.1 mm (3.3 in)
1878101.6 mm (4.0 in)
1879109.0 mm (4.3 in)
188053.6 mm (2.1 in)
188168.3 mm (2.7 in)
188286.6 mm (3.4 in)
188379.7 mm (3.1 in)
1884116.6 mm (4.6 in)
188573.8 mm (2.9 in)
188683.7 mm (3.3 in)
188790.7 mm (3.6 in)
188883.9 mm (3.3 in)
188995.3 mm (3.8 in)
189078.2 mm (3.1 in)
189191.0 mm (3.6 in)
1892121.9 mm (4.8 in)
189363.3 mm (2.5 in)
189473.1 mm (2.9 in)
189599.8 mm (3.9 in)
1896119.2 mm (4.7 in)
189771.7 mm (2.8 in)
189898.3 mm (3.9 in)
1899111.8 mm (4.4 in)
1900117.6 mm (4.6 in)
1901119.4 mm (4.7 in)
190263.8 mm (2.5 in)
190369.1 mm (2.7 in)
190493.4 mm (3.7 in)
190581.8 mm (3.2 in)
1906101.1 mm (4.0 in)
190768.8 mm (2.7 in)
1908102.6 mm (4.0 in)
190988.7 mm (3.5 in)
1910116.6 mm (4.6 in)
191155.9 mm (2.2 in)
191277.1 mm (3.0 in)
1913115.1 mm (4.5 in)
191452.6 mm (2.1 in)
191567.1 mm (2.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Truro by year The longest dry spell of the year at Truro, 1872 to 1915. The record is 25 days in 1889, marked on the chart; the median year is 13 days. 5101520251880189019001910Record: 25 days in 1889
The longest dry spell of the year at Truro, 1872 to 1915. The record is 25 days in 1889, marked on the chart; the median year is 13 days.
Longest dry spell (CDD) at Truro by year
YearLongest dry spell (CDD)
187212 days
187313 days
187412 days
187517 days
187614 days
187715 days
187814 days
187911 days
188014 days
188111 days
188213 days
188320 days
188412 days
188517 days
188619 days
188714 days
18889 days
188925 days
189015 days
189115 days
189213 days
189313 days
189415 days
189512 days
189612 days
189715 days
189813 days
189912 days
190010 days
190110 days
190212 days
190312 days
19049 days
190514 days
190614 days
190713 days
190814 days
190919 days
191015 days
191119 days
191210 days
19139 days
191417 days
191512 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

35 years with a frost

Across 35 years with a frost, the median last spring frost at Truro falls on 6 June and the median first autumn frost on 16 September, which leaves a median of 106 days between them.

Fitted over all years, the growing season changes by -1.7 days per decade at this station.

Frost dates and growing season at Truro
MeasureMedian, all yearsEarliest periodRecent period (1881 to 1914)Recent against earliestFitted trend
Last spring frost6 Junen/a9 Junen/a+2.4 days per decade
First autumn frost16 Septembern/a17 Septembern/a+0.7 days per decade
Growing days106 daysn/a107 daysn/a-1.7 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

40 years, 1872 to 1914

A day with at least 56.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 102.5 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Truro: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years56.0 mm (2.2 in)
5 years70.4 mm (2.8 in)
10 years79.1 mm (3.1 in)
25 years89.2 mm (3.5 in)
50 years96.1 mm (3.8 in)Longer than the 40 years of record
100 years102.5 mm (4.0 in)Longer than the 40 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 40 years of values from 1872 to 1914.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 88.4 mm (3.5 in) in 1896; 88.1 mm (3.5 in) in 1892; 85.6 mm (3.4 in) in 1908.

Download the Data

  • Data for Truro standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Truro threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).